Jetty and unit therefor



' '|92 l 635 899 Jul 12'. 7 t* c. L Nol-LEN f Jau-Y mn uur; sumaron mee un. s. 192e z stun-suoi: 1

gwwntoc @lL/Vahlen July 12.1921.

c. l.. rNol-" EN JETTY AND UNIT THERBFOR rma pme, 192s 1 z suns-unizff Patented July 12, 1927.

UNITED STATES Pari-:NTy OFFICE.

CARL L. NOHLEN, F CLEBURNE, KANSAS.

JETTY AND UNIT THEREFOR.

Application led December 9, 1926. Serial No. 153,631.

This invention relates to means for protecting the banks of rivers and streams from erosion and to cause the filling in of silt and like material at any particular point along a river bank and the invention particularly relates to the Construction of jetties for this purpose. j Y

The general object of the present invention is to provide a unit which may be combined with other units of like character to form a jettywhich is capable of being readily anchored to the shore, which will form a sufficient obstruction as t0 cause the deposit of silt and sand and which is so constructedL that there are no cross bars to be bent ont of shape by ice or floating logs or trees.

A further object is to provide a jetty unit of such shape that hog fencing or like material may be wrapped around the unit, which helps the unit from sinking out of sight in quicksands.

A still further object is to provide a jetty unit of a generally spherical but open work character so that the jetty will tit to some extent the shape of a river bank and thus prevent the bank from washing away be tween the face of the bank and the first jetty unit, and a further object in this connection is to form a jetty unit of hoops, these hoops acting` to brace each other without 'the use of cables and these hoops permitting the jetty units to be formed with or without prongs.

Other objects will appear in the course of the following description.

My invention is illustrated in the accompanying drawings wherein Figure 1 is a diagrammatic illustration of my device in applied position; i

Fig. 2 is a sectional view thereof;

Fig. 3 is a sectional view of one of the jetty units; i

Fig. 4l is a modiied construction of one of the hoops;

Fig. 5 is a similar view to Figure 4, but showing a modification of the construction illustrated in Figure 4;

Fig. 6 is a detailed view of a modification of the device.

Referring to these drawings it will be seen that each jetty unit A is constructed of preferably three hoops or rings 10, the three hoops being disposed with their planes at right angles to each other so as to constitute a hollow, open work sphere. These hoops are formed of flat iron or steel bars. They can also, however, be madel of round iron bars, pipes, channel iron bars, angle irons, or bars of any other desired cross sectional shape.

When a small Vjetty is to be made, the open work balls or units will be formed with their hoops each of a single strip of iron or steel arranged together, as shown in Figure 3, but it will be understood that where larger hoops are t0 be used, the hoops will be formed of two, three or four pieces or strips, as shown in Figure 4. Where the balls are relatively large, it will be obvious that it is easier to make them of relatively small sections bolted to each other than it would be to handle one strip or bar of a'leng-th sufticient to form a large hoop. Under some circumstances and in non-navigable streams, 7

it is advisable to provide prongs on the balls or jet-ty units and to this end, as shownv in Figure 5, each of the hoops is formed with the prongs 11. Under these circumstances, the hoops of each unit are formed in sections 12 and the point of attachment to the `next adjacent section is inward of the end ofv the section so as to leave the prongs 11 projected. It will be understood, however, that the prongs might be formed in other ways as, for instance, the prongs may be formed by strips or bars 13 riveted or bolted at two points to the hoop and having their ends 14 projecting upward.

The style of jetty shown in Figure 3 may beused in navigable streams as there are no cross bars or prongs to punch holes through the bottoms of boats. The prongs, where they are used, help to anchor the jety ties and also to catch trash, etc. Where sufficient anchorage cables are used, the jetty unit without the prongs can be used. l In Figure 1 I have illustrated how these jetty units are to be used. The jetty is shown as constructed of five units held to the river Abank B by the anchoring cables 15 and 16 and the anchors 17. The cables 16 are con-V nected to the outermost units while the cables 15 are carried from the innermost unit or units directly to the river bank. The cables 16 prevent the jetty from swinging.

It will be seen from Figure 2 that the spherical shape. of the jetty units permits them to be brought up close to the bank and lit against the face thereot. These jetty units orn'i a retard which breaks up the force ot' the Current and causes the deposit of silt and sand along the bank as7 tor instance, at C. This keeps the bank huilt up.y

Obviously as inany jetty units inay he used or as inany jetties inay be disposed along the bank as required.

lt Will loe seen that the jetty units are relatively light7 that they can bereadily put together 'and easily handled, and that they may he covered with Wire netting as7 tor instance, hog fencing, so as to keep there trein sinking out of sight in quicksands or in like places. lnasinuch the jetty units are spherical in form, there are no sharp angles or points which will be liable to punch holes in the hottoins ot heats and they `vill tend to roll when struck. There are no cross hars or other like eleinents which would tend to damage boats accidentally striking the jetties. The prongs used upon the units in non-navigable stigeains help to anchor the jetty unit in place and help also to catch trash, such as floating branches, Weedsj and the like, so as to aid in retarding` the current and aid inthe deposit ot silt.

lVhile l have illustrated certain preferred embodiments of niy invention7 l do not Wish to be limited thereto, as it is obvious that many changes inight be inade in the details oi construction and arrangement of parts Without departing from the spirit of the invent-ion as defined in the appended claims.

l. A jetty unit consisting of a plurality ot circula-r hoops intersecting each other at. different angles and rigidly connected t0 each other to iorin an open Work sphere.

2. A jetty unit consisting ot a plurality ot circular hoops intersecting each other at ditlerent angles and rigidly engaged with each other, certain of the hoops heing termed with outstanding prongs.

3. A. jetty unit consisting ot a plurality ot circular hoops intersecting' each other at uiiiferent angles and rigidly engaged with each other, the ends ot certain of the hoops being dei'lected outward to forni prongs.

Ll. A jetty unit consisting ot at least three circular inetal hoops, the hoops intersecting each other at right angles to define a sphere and being rigidly engaged lwith each other.

5. it jetty consisting of a plurality of open 'work spherical units arranged in line from a river bank, cables connecting the several units to eachother and to the shore, and cables connecting the outermost units tothe shore and extending at an angle to the iirst nalned cables.

l-n testimony whereof I hereunto atlix iny signature.

CARL L. NOHLEN. 

